Chaplet



F. L. SPENCER ET AL CHAPLE'I Filed Aug. 29, 1923 a s w 9w w 4 v 7 6 6wfi \m u Patented June 2, .1925.

UNITED STAT FRIEND SPENCER AND THOMAS JONES, OF ROCHESTER, NEW YORK.

I CHAPLET.

Application filed August 29,1923. Serial No. 660,033.

and more particularly to chaplets such as are used for supporting a corein a mold and it has for its object to provide a simple construction ofmetallic chaplet which can be produced at a 10W cost and that will holditself firmly in position under the Weight of the core. Further objectsof the invention I are to firmly anchor the chaplet in the sand so thata sustained position will be assured and to dispose of it in such mannerthat when melted by the incoming metal it w1ll be readily absorbed. Tothese and other ends the invention resides in certain improvements andcombinations of parts allas will hereinafter be more fully described,the novel features being pointed out in the claims at the end of thespecification.

In the drawing:

Figure 1 is a vertical sectional view through a molders flask containinga mold provided with a core supportedby a plurality of chapletsconstructed in accordance therewith and illustrating one embodiment ofour invention;

Figure 2 is a perspective view of one of the anchoring pieces;

Figure 3 is a perspective view of the metallic chaplet, and;

Figure 4 is a sectional view taken longitudinally of the chaplet;

Similar reference numerals hroughout the several years indicate the sameparts.

Some of the usual difliculties experienced in the use of chaplets aremaintaining the supporting head at just the right degree of projectionfrom the sand, and keeping it upright or normal to the surface of thecore that it is used to support. In the practice of our invention, asidefrom improving the metallic chaplet itself we support it in an anchoringbody that holds it firmly and that has a large area of contact in thesurrounding sand, so that none'bf the ordinary jars and stresses are aptto .displace it.

Referring more particularly to the draw: ing 1 indicates the bottomboard, 2 the drag and 3 the cope of a simple form of molders flask inwhich a mold 4 has been made. The core 5 for this mold is shown supported'by four of our improved chaplets,'each consisting of a supportinghead 6, a shank 7 and a shoulder 8. The head engages the core while theshoulderrests against the wall of the mold and gives a broad supportthat defines the degree of projection of the head and, hence thethickness ofthe cast shell.- The shank '7 is ordinarily simply pressedinto the sand but We provide a firmer support by using a plurality ofanchoring blocks 9, the surfaces of which are flush with the wall of themold on one side and whichcontain bores 10 normal to such surfaces. Atthe mouth of the bore is a counter-sunk portion 11 to receive theshoulder flange 8 of the chaplet. These anchoring blocks may be ofvarious sizes and shapes and may be individual to each chaplet as shownin the cope or a plurality of chaplets niay be supported in one anchorblock as shown in the drag. The blocks are preferabl-y of sand but areself sustaining and firmer than the surrounding sand of the flask andare preferably made in the same manner as an ordinary core, that ismolded with a suitable binder and baked so that they are ultimatelyfrangible but will hold their form for ordinary purposes. One of theindividual blocks is shown separately in Figure 2 of frusto-conicalshape so that itwill lock itself in the sand in the manner of a dovetail and not fall into the mold when inverted as shown in the copeportion of Figure 1. The shank portion 7 of the chaplet being insertedin the bore 10 and the flange or.

shoulder 8 lodged in the countersunk portion 1],, the device is firmlyheld against lateral displacement and maintains the core 5 accuratelyspaced in the walls of the mold without fear of disarrangement.

lVe prefer to plate the chaplet with an easily fusible metal such as tinin order to cause it to melt quickly and fuse with the casting and atthe same time we utilize the tin bath as a securing means for the flangeB. This flange as shown in Figure 4 is preferably constituted by awasher slipped over the shank 7 to a point at the desired dise I I Itance from the head 6 and the tin plate or protective coating indicatedat 12 1n Fi ure 4 acts as a solder to fix. the washer in place. 4

5 We claim as our invention:

1. A chaplet embodying a supportin head havin an'integral shank and ashoul er 1nterme' iate the shank consisting vof a separate washerencircling the same, the whole structure carrying a coating of a morereadily fusible metalby which the washer is secured to the shank.

2. The combination .with a self sustaining non-metallic anchoring pieceadapted to 1 beimbedded in the moldlng sand and having greater cohesiveE1: erties than the latter, of a chaplet em ported in such anchorinpiece, a head projectin therefrom an an intermediate shoul er abuttingthe anchorin piece.

3. The combination with a se 15 sustaining non-metallic anchoring pieceadapted bore, of a cha ying a shank sup- 'imbeddedfin the moldingsandand having ing non-metallic anchor-ing piece adapted to be imbedded inthe molding sand and having greater cohesive properties than the latter,said anchoring 'piece being provided with a bore and countersunk at themouth of the bore, of a cha let embodying a shank supported in such ore,a head projecting therefrom, and an intermediate shoulder occupying thecountersunk portion of the anchoring piece.

FRIEND L. SPENCER.

THOMAS JONES.

